In 2003, he joined ASV Cham for a season, a club that had once been a second division outfit but now had become a long-term Landesliga club.
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Wettberg joined the German postal service, who he worked for until his retirement in July 2002.
The greatest success for the club came in 1986, when, under coach Karsten Wettberg, the title in the Bayernliga was won.
Petter Adolf Karsten | Karsten Kruschel | Thomas Karsten | Odd Karsten Tveit | Karsten Wettberg | Karsten Warholm | Karsten Voigt | Karsten Solheim | Karsten Schubert | Gustav Karl Wilhelm Hermann Karsten | Detlev Karsten Rohwedder | Christian Karsten Hansen |